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Advisories

FFmpeg through 9.0.2 DASH Demuxer Infinite Loop via Empty SegmentTemplate Media

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severity
medium
date
Affecting

  • FFmpeg <= 9.0.2

CWE
  • CWE-835 Loop with Unreachable Exit Condition ('Infinite Loop')
CVSS
5.7
CVSS V4 Vector
CVSS:4.0/AV:L/AC:H/AT:P/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
Credit
Joshua Rogers (AISLE Research)
Description
FFmpeg through 9.0.2 contains a denial of service vulnerability in the DASH demuxer that allows attackers to trigger an infinite loop by supplying an empty SegmentTemplate media URL. Attackers can craft an .mpd manifest declaring SegmentTemplate media="" so get_current_fragment() calls av_strireplace() with an empty search string, consuming CPU indefinitely.

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